Name
omahi3r
Label
REM CHAT AHI (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with 3% or arousal)
Description
CHAT apnea hypopnea index {[(total number of obstructive apneas) + (total number of mixed apneas) + (total number of hypopneas associated with >= 3% desaturation or arousal)] / (hours of sleep)}. will be missing if total sleep time is 0.
Calculation
Units
events per hour
Type
numeric